Asymmetrically Clipped Optical OFDM System with Enhanced Index Modulation

被引：0
|
作者：
Wang H. [1 ]
He J. [1 ]
Cao M. [1 ]
Peng Q. [1 ]
Wang B. [2 ]
机构：
[1] School of Computer and Communication, Lanzhou University of Technology, Lanzhou
[2] Digital and Intelligent Division of Changqing Oilfield, Xi’an
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2024年 / 47卷 / 01期
关键词：
index modulation; orthogonal frequency division multiplexing; wireless optical communication;
D O I：
10.13190/j.jbupt.2022-284
中图分类号：
学科分类号：
摘要：
To solve the problem that the transmission rate of conventional asymmetrically clipped optical OFDM system with index modulation (OFDM) is not ideal, an asymmetrically clipped optical OFDM with enhanced index modulation system is proposed by selecting the active carrier twice to increase the index information carried by the active subcarrier and transmitting different modulation symbols on the active subcarrier. Meanwhile, the subcarrier selection algorithm is proposed to improve the bit error rate of the system. In particular, the modulation mapping principle of the proposed system is introduced in detail. Then, its theoretical bit error rate is derived by using the joint bound technique. Finally, the proposed system is compared with the conventional systems. The simulation results show that the proposed system not only increases the transmission rate but also improves the bit error rate. Specifically, when the turbulence is strong and the bit error rate is 1 伊 10 - 3, the transmission rate of (8,3,3) the proposed system is 1. 25 times higher than that of (8,6) conventional system, meanwhile the signal to noise ratio is improved by about 1. 4 dB. © 2024 Beijing University of Posts and Telecommunications. All rights reserved.
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页码：78 / 84
页数：6
相关论文
共 12 条
  • [1] KE X Z, WU J L, YANG S J., Research progress and prospect of atmospheric turbulence for wireless optical communication, Chinese Journal of Radio Science, 36, 3, pp. 323-339, (2021)
  • [2] LIU Z J, HU X, WANG W D, Et al., A joint PAPR reduction and digital predistortion based on real-valued neural networks for OFDM systems, IEEE Transactions on Broadcasting, 68, 1, pp. 223-231, (2021)
  • [3] BA褗AR E, PANAYIRCI E., Optical OFDM with index modulation for visible light communications [ C], 椅2015 4th International Workshop on Optical Wireless Communications(IWOW), pp. 11-15, (2015)
  • [4] WANG H Q, DOU H X, CAO M H, Et al., Asymmetrically clipped optical OFDM with generalized index modulation for atmospheric turbulent channel, Optics and Precision Engineering, 29, 9, pp. 2268-2277, (2021)
  • [5] BAI R W, HRANILOVIC S, WANG Z C., Low-complexity layered ACO-OFDM for power-efficient visible light communications, IEEE Transactions on Green Communications and Networking, 6, 3, pp. 1780-1792, (2022)
  • [6] XU X Y, ZHANG Q, YUE D W., Orthogonal frequency division multiplexing with index modulation based on discrete Hartley transform in visible light communications, IEEE Photonics Journal, 14, 3, pp. 1-10, (2022)
  • [7] ZHENG D, ZHANG H M, SONG J., OFDM with differential index modulation for visible light communication, IEEE Photonics Journal, 12, 1, pp. 1-8, (2020)
  • [8] MAO T Q, JIANG R, BAI R W., Optical dual-mode index modulation aided OFDM for visible light communications, Optics Communications, 39, 1, pp. 37-41, (2017)
  • [9] WEN M W, BASAR E, LI Q, Et al., Multiple-mode orthogonal frequency division multiplexing with index modulation, IEEE Transactions on Communications, 65, 9, pp. 3892-3906, (2017)
  • [10] MA Q L, XIAO Y, DAN L L, Et al., Subcarrier allocation for OFDM with index modulation, IEEE Communications Letters, 20, 7, pp. 1469-1472, (2016)
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